package demo;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Dom04 {
    public static void main(String[] args) throws ParserConfigurationException, TransformerException, IOException, SAXException {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse("src/demo2.xml");
        NodeList list = doc.getElementsByTagName("Brand");
        for (int i=0;i<list.getLength(); i++){
            Element brandElement = (Element)list.item(i);
            String brandName = brandElement.getAttribute("name");
            if (brandName.equals("三星")){
                brandElement.setAttribute("name","SAMSUNG");
            }
        }


        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMSource domSource = new DOMSource(doc);
        transformer.setOutputProperty(OutputKeys.ENCODING,"gb2312");
        StreamResult result = new StreamResult(
                new FileOutputStream("src/demo2.xml")
        );
        transformer.transform(domSource,result);
    }
}
